You can color change. There's a piece of paper that has a color on it and you flip the clear piece of paper with color on it. Blue and yellow makes green.
It was a bit weird to me that it went through pages dedicated to primary colors (red, yellow, blue), but there weren't any corresponding pages for orange, green, purple, etc. Is this just an American thing?
Un livre sympa pour apprendre les couleurs aux petits avec des pages transparentes qui plaisent toujours ! Néanmoins un peu vieillot et pas très original.
This book takes a technical approach to colors, explaining the ROYGBIV rainbow spectrum and how mixing primary colors makes secondary colors.
I like that kids can use the cellophane pages to overlay colors to actually test the "mixing."
(I personally feel that the Indigo/violet part of ROYGBIV is probably outdated and should just be replaced with Purple but this book introduces us to those colors and then only mentions violet, leaving poor indigo out of the conversation altogether.)
I like the addition of the information on black and white and shadow casting. And the puzzler at the end is interesting although and overlay here might've been interesting and kept with the theme.
Colors is a book about the different colors. You have your normal plain colors, but when you mix colors, a new color will be made. For example, if you mix blue and yellow, then you will get green. City buildings are colorful, but when cast shadows of black and gray. When looking at colors surround by different colored flowers, they appear to be different shades. You can make a color lighter by adding white or darker by adding gray.